Edit Menu: Remove Special
From Audacity Development Manual
You can also silence or trim audio only, not affecting labels.
|You may hear a click at the edit points when you remove or paste audio. This can be caused by DC offset in the waveform or by poor selection of the edit points. See this Editing Frequently Asked Question for how to deal with this.|
|Split Cut||CTRL + ALT + X|
|Split Delete||CTRL + ALT + K|
|Silence Audio||CTRL + L|
|Trim Audio||CTRL + T|
Split Cut CTRL + ALT + X
Same as, but none of the audio data or labels to right of the selection are shifted. This is therefore a useful command to remove one label of a group of labels without affecting the other labels (be sure to select only in the label track unless you want to cut the audio as well as the label).
Split Delete CTRL + ALT + K
Removes the selected audio and/or labels without placing these on the Audacity clipboard, but like Split Cut does not shift the following audio or labels.
This is therefore a useful command to remove one label of a group of labels without affecting the other labels (be sure to select only in the label track unless you want to delete the audio as well as the label).
The labels following the deleted section do not move to the left. The labels still correspond to the same audio regions. This is a quick way to delete a label without affecting any other labels on the Label Track.
As with Split Cut the preceding and following audio are now separate clips that can be moved independently.
The following two commands affect the audio in the selection but do not affect any labels that are in the selection.
Silence Audio CTRL + L
Replaces the selected audio with silence.
Trim Audio CTRL + T
Removes all audio from the current clip except the selected part, creating its own clip from the remaining audio. If there are other separate clips in the same track these are not removed or shifted unless trimming the entire length of a clip or clips (note in the "After" image below that the audio in the clip to the right is unaffected).